One of four brown bumblebees known from the British Isles, two of which, B. muscorum and B. humilis, are declining greatly. B. pascuorum, however, although it may well be less frequent than it used to be, is currently extending its range northward, being fairly recently found on Orkney. It may be seen in a great variety of habitats and is a regular inhabitant of gardens. Identification may be very difficult in the field, unless the black patches on the sides of the abdomen are well-developed, when the specimen will definitely be this species. Pale specimens, which occur with greater frequency towards the north, require very careful examination, records being best based on males, where the form of the genitalia is diagnostic (but requiring microscopic examination).
Widely distributed throughout Britain, Ireland and the Channel Islands. Overseas: all but the more northerly areas of Europe and Asia to China. Not found in tropical and sub-tropical Asia.